Emerson GXT2U user manual DC-to-DC Converter, Battery, Dynamic Bypass

Page 10

DC-to-DC Converter

The DC-to-DC converter utilizes energy from the battery system and raises the DC voltage to the optimum operating voltage for the inverter. This allows the inverter to operate continuously at its optimum efficiency and voltage, thus increasing reliability.

Battery

The Liebert GXT2U utilizes valve-regulated, nonspillable lead acid batteries. To maintain battery design life, operate the UPS in an ambient temperature of 68°F to 77°F (20°C to 25°C). Optional external battery cabinets are available to extend battery run times.

Dynamic Bypass

The Liebert GXT2U provides an alternate path for utility power to the connected load in the unlikely event of a UPS malfunction. Should the UPS have an overload, overtemperature, or UPS failure condition, the UPS automatically transfers the connected load to bypass. Bypass operation is indicated by an audible alarm and illuminated amber Bypass LED (other LEDs may be illuminated to indicate the diagnosed problem). To manually transfer the connected load from the inverter to bypass, press the Standby button once.

NOTE

The bypass power path does NOT protect the connected equipment from disturbances on the utility supply.

6

DISCONTINUED

PRODUCT

 

Image 10
Contents Liebert GXT2U DIS Product Table of Contents Operating Instructions Important Safety Instructions DIS Glossary of Symbols Introduction Major Components Rectifier/Power Factor Correction PFC CircuitBattery Charger Transient Voltage Surge Suppression and EMI/RFI FiltersDC-to-DC Converter BatteryDynamic Bypass Liebert GXT2U-Rear View Preparation InstallationTower UPS Installation Base to accommodateRack-Mount UPS Conversion and Installation Optional rack mount handlesMounting rails M5 screwsApply grease UPS or battery cabinet Apply grease inside External Battery Cabinet Installation DIS Controls and Indicators ON/Alarm Silence/Manual Battery Test ButtonBypass Indicator LED Amber Load/Battery Level Indicators 4 Green, 1 AmberFault Indicator LED Red UPS on Indicator LED GreenOutput Voltage Selection Bypass Mode Operation Normal Mode OperationOperating Instructions Battery Mode Operation Battery Recharge ModeCommunications Interface Port Pins 4 & 5 Remote Shutdown on BatteryCommunications Pin Assignment DescriptionPins 5 & 6 Any-Mode Shutdown Auto-Enable Output Pin 6 LogicUPS Intelligent Communications Configuration Program Liebert GXT2U Configuration Program AbilitiesMaintenance Battery ReplacementInternal Battery Replacement Procedures On bypass due to DC bus overvoltage beep every 4 sec TroubleshootingOn bypass due to overtemperature condition beep every 4 sec On bypass due to PFC failure beep every 4 secTroubleshooting Guide Problem Cause SolutionBattery test is performed Alarm Conditions Condition AlarmSpecifications Dimensions in mm Battery Cabinet SpecificationsWEIGHT, lb kg Load % Battery Run TimesInternal Battery MinutesProduct Warranty Registration DIS DIS DIS Product Emerson Network Power Technical Support / ServiceLocations
Related manuals
Manual 40 pages 63.98 Kb